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Security level:Internal

Propagation for LTE Product LTE RRU ChannelTroubleshooting

2011-7-26

LTE Team, Wireless Product Rollout Dept, GTS

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Radio problems troubleshooting

guide

Characteristics

Values

Matching Versions

Question Feedback

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Characteristics 1/5

Monitor method for Feeder&antenna problem troubleshooting

1 VSWR Test

2

Oine antenna interfere detect test

Monitor methods for radio interference detection:

1)uplink broaban scannin!

2)"i!# precision pectrum !etection

$)broa ban on-line %re&uency scan

')broa ban o(-line %re&uency scan

Feeder& "ntenna #stem Faults troubleshootingainly to resolve %eeer*s

RTW+ proble,s

Uplin$ %nterference !etection use uplink %re&uency scannin! to eicateinter%erence

Main performance monitor for RRU Channel Troubleshooting:

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Characteristics 2/5Monitor method for Feeder&antenna problem troubleshooting

'()R Test TR ()RTET

.elon! to /ine #i!#- precision VSWR test result only %or RR port VSWR test 3ill use be%ore

4ell 3as acte to c#eck #ar3are install &uality5 3#en VSWR alar, appeare VSWR test 3ill be

use to conr, it

4o,parin! 3it# on-line VSWR test t#is VSWR test is a o(-line test 3as less a(ecte by raio

si!nal

*'Oine antenna interfere detect test TR RFTET

.y control o% RR T po3er observe 3#et#er RTW+ 3as obviously c#an!e urin! test to 8u!e

3#et#er inter,oulation inter%erence 3as e9ist /nly RR port is a TR port it can test

3#et#er inter,oulation inter%erence 3as e9ist5 i% it ;s a T or R port only it is no nee an can

not observe 3#et#er a inter,oulation inter%erence e9ist

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Characteristics 3/5Monitor methods for radio interference detection

' uplin$ broadband scanning

We can observe inter%erence aroun

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Characteristics 4/5Monitor methods for radio interference detection

*' pectrum !etection +,igh precision pectrum !etection

It is a on-line scannin! to observe inter%erence %or

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Characteristics 5/5

Monitor methods for radio interference detection

-' pectrum !etection + broad band on+line fre.uenc# scan

4an scan a certain continuous ban 4o,parin! 3it# "i!# precision Spectru, >etection broa

ban on-line %re&uency scan #as a lo3er i(erentiate rate an &uickly spee o% scannin! but#i!#er ban3it#

/' pectrum !etection + broad band o0+line fre.uenc# scan

It is a o(-line scan nee to eactivate cell It can scan RR*s 3#ole ban3it# 4o,parin! 3it#

broa ban on-line %re&uency scan an "i!# precision Spectru, >etection broa ban o(-line

%re&uency scan 3orks slo3ly but support a 3ier ban3it#

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Values

' %mpro1e test e2cienc# &Reduce ser1ice cost3

!ecrease the number of local test of ()R4

5o need for local interference test4Use MML commands' reduce use rate of sitemaster' sa1e t#e e9pense o%

Site,aster an labor3

*' Reduce re.uest of test tools

Reduce use rate of itemaster and other tools3

Remote test' no need ocal troubleshooting3

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5et6or$ element AT< e=oe.

version %1&&'&&3C&&SPC3&& and the later version

Name Explain Path

EG()e'AN2.1)LTE

''U C*annel

T+o-le*ooting Gide

S//o+tWi+ele P+od0t LineLTE

((eNodeTe0*ni0al Gide

eNode LT Ue+

Gide

Gide to e LT Pe+fo+5an0e

onito+ing

S//o+tWi+ele P+od0t LineLTE

((eNodee'AN2.1P+od0t

do05entation

Matching Versions

ersion match relationship

!eleant documents

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Question Feedback

)ireless 7roduct Rollout !ept LTE team

Ren Milin88-98

eMail

renmilin;hua6ei3com

"elcome to propose #our aluable adice on LTE !!$ Channel

Troubleshooting % thank #ou&

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T*an6 7o

888.*a8ei.0o5